The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2026
Filed:
Dec. 06, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Naotoshi Ogawa, Tochigi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A zoom lens includes a plurality of lens units, which consist of, in order from an object side to an image side, a first lens unit having positive refractive power, an intermediate group including a plurality of lens units, and a rear lens unit. A distance between adjacent lens units changes during zooming from a wide-angle end to a telephoto end. The first lens unit is fixed relative to an image plane for zooming from the wide-angle end to the telephoto end. The first lens unit consists of a plurality of subunits in which a distance between adjacent subunits changes during focusing, and the plurality of subunits include, in order from the object side to the image side, a first subunit that does not move for focusing, a second subunit having positive refractive power that moves for focusing, and a third subunit having negative refractive power. A predetermined inequality is satisfied.